The result is the fruit known as Mongee bananas, which roughly translates as Incredible bananas. They went on sale last year in a department store in Okayama, which sits roughly halfway between Kyoto and Hiroshima.

Buyers are urged to wait for little brown spots to appear on the skin as a sign that the banana is ready to be eaten – in its entirety, of course.

SoraNews24, a Japanese website that taste-tested the fruit, reported that the skin was relatively thin compared with a regular banana and was therefore “fairly easy to eat”.

“Since it’s very thin, there’s no strange texture, and compared to the sweetness of the banana there isn’t much flavour to the skin,” the site reported. The reviewers said the flesh had a strong tropical flavour and was almost pineapple-like.

The banana has been produced only in small batches so far, so customers face a steep bill to save themselves the bother of peeling their bananas: it is currently priced at 648 yen (£4.32) per piece.

The spokesman said the farm was planning to produce 10 times as many bananas this year. It was currently cultivating bananas only in Japan but was considering exporting overseas in the future, he said.